Gemstone



FIG. 1 is a top view;

FIG. 2 is a first side view;

FIG. 3 is bottom view;

FIG. 4 is second side view;

FIG. 5 is first end view;

FIG. 6 is second end view;

FIG. 7 is upper perspective view, and,

FIG. 8 is lower perspective view thereof. 

The ornamental design for a gemstone, as shown. 